열처리에 의한 청변균 변색 소나무 판재의 재색 변화
Effect of Heat Treatment on the Color Change of Blue-Stained Pinus densiflora Boards
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Red pine is a popular species for making a cutting board in Korea, but easily sapstained. Heat treatment could improve its quality by darkening and equalizing the color of sapstained wood. The color change of sap stained red pine boards was investigated by heat treatmentat 190℃. It was observed that the color of heat treated boards got darker and it made thecolor of sap stain vanished. A colorimeter was used to measure color indexes. It was revealedthat the values of the lightness (L*) and the yellowness (b*) decreased as heat treatment repeatedwhile the values of the redness (a*) increased. The average of the color difference (△E*)between the control and 1st heat treated boards was 16.1, which could be expressed as‘Extremely different’ while that between the 1st and 2nd heat treated boards was 8.3, whichcould be expressed as ‘Considerably different’. The fact that heat treatment equalized the colorof boards was confirmed by a statistical analysis.
Abstract
Red pine is a popular species for making a cutting board in Korea, but easily sapstained. Heat treatment could improve its quality by darkening and equalizing the color of sapstained wood. The color change of sap stained red pine boards was investigated by heat treatmentat 190℃. It was observed that the color of heat treated boards got darker and it made thecolor of sap stain vanished. A colorimeter was used to measure color indexes. It was revealedthat the values of the lightness (L*) and the yellowness (b*) decreased as heat treatment repeatedwhile the values of the redness (a*) increased. The average of the color difference (△E*)between the control and 1st heat treated boards was 16.1, which could be expressed as‘Extremely different’ while that between the 1st and 2nd heat treated boards was 8.3, whichcould be expressed as ‘Considerably different’. The fact that heat treatment equalized the colorof boards was confirmed by a statistical analysis.
참고문헌 (15)
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